A hardware hacker has discovered a secret debugging feature hidden in all AMD chips made in the past decade.

The password-protected debugger came as a shock to reverse-engineers who have hungered for an on-chip mechanism for performing conditional and direct-hardware breakpoint operations. Although AMD has built the firmware-controlled feature into all chips since the Athlon XP, the company kept it a closely guarded secret that was only disclosed late last week by a hacker who goes by the name Czernobyl.

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You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump

Frequently, management will not publicize tools which are still in alpha quality & they don't want to pay for the resources to improve its worth. If they get released (at all...), it is "as is" & without a lot of fanfare.